I don't know about sterilizing, but I've found the cold frame useful for
another purpose in summer. I remove the glass doors and replace with a
lightweight frame containing chicken wire. In the frame, I plant low-growing
items like lettuces. The chicken wire protects them from feet, pets, and
other mishaps.

"Salty Thumb" wrote in message
news:tNeXc.1130$Cc.988@trnddc07...
does anybody stick their seed starting pots / other garden paraphenalia in
a minigreenhouse or cold frame during the summer to sterilize them?

Is it a dumb idea, waste of time or what? As it is, I don't bother
washing, but if I'm going to have a cold frame, i would if it might be
useful outside of winter anybody know what temperature plastics will
start
melting at? Cold frame will have real glass.